[英]Memory Game in Python with Tkinter
我正在嘗試使用python 3和tkinter制作記憶游戲。 我是python的新手,所以很難。 我的問題是我試圖從“ Memory”類中調用“ Cell”類中的“ show_word”方法,但我不知道該怎么做。
記憶游戲:
def create_widgets(self):
""" Create widgets to display the Memory game """
# buttons to show the words
column = 0
row = 1
the_pairs = self.readShuffle()
for index in range(36):
Button(self,
text = "hidden",
width = "7",
height = "2",
relief = GROOVE,
command = WHAT SHOULD I WRITE HERE???
).grid(row = row, column = column, padx = 1, pady = 1)
column += 1
if column == 6:
column = 0
row += 1
您遇到了一個細微的范圍問題。 當您創建一個引用包含范圍的變量的函數時,這些變量的值在函數定義時不是固定的,而是在函數執行時 。 換句話說,當你這樣做:
command = lambda: print(index)
你告訴Python在調用函數時打印index
的值。 當用戶按下其中一個按鈕,導致調用該函數時, index
值為35。
要在函數定義時固定值,您必須使用默認值,如下所示:
command = lambda x=index: print(x)
我相信你可以弄清楚相應的show_word
修復,但以防萬一:
command = lambda x=index: Cell.show_word(the_pairs[x])
在我可以直接幫助你之前,我需要一個答案來回答我的評論,但同時,這里有一些提示更優雅地編寫代碼:
from tkinter import *
# `tkinter` is meant to be used that way, but `random` isn't really - the names
# can be confusing without an explicit module reference. So instead:
import random
class Cell:
def __init__(self, word, hidden):
self.word = word
self.hidden = hidden
def show_word(self):
""" Shows the word behind the cell """
self.hidden = not self.hidden
# no need to take this logic apart into cases
self.button.set(str(self))
def __str__(self):
""" Displays or hides the word """
# A simpler form of conditional; also, don't compare things
# explicitly to True or False
return "---" if self.hidden else self.word
class Memory(Frame):
""" GUI application that creates a Memory game """
def __init__(self, master):
super(Memory, self).__init__(master)
self.grid()
self.create_widgets()
self.tries = 0
def readShuffle(self):
""" Creates and organizes (shuffles) the pairs in a list """
# The modern idiom for handling files and ensuring they are closed
with open("memo.txt","r") as words_file:
# The file can be iterated over directly, and is treated as
# a list of lines. Since we just want all the rstrip()ped
# lines, we can do the file processing all at once with a list
# comprehension.
# Let's also grab 18 random words while we're at it. We don't
# really want to *shuffle* the words, but instead *sample* them -
# we don't care about the words that we didn't select.
words = random.sample(
[line.rstrip('\n') for line in words_file], 18
)
# Instead of making 18 pairs of cells, we can make 18 cells and then
# pair them up. The set of 18 cells can also be made easily with a
# list comprehension. Notice how we get to iterate directly now,
# instead of messing around with indices into lists.
the_pairs = [Cell(word, True) for word in words] * 2
shuffle(the_pairs)
return the_pairs
def create_widgets(self):
""" Creates widgets to display the Memory game """
# instruction text
Label(self,
text = "- The Memory Game -",
font = ("Helvetica", 12, "bold"),
).grid(row = 0, column = 0, columnspan = 7)
# buttons to show the words
the_pairs = self.readShuffle()
self.buttons = []
# Again, we can iterate in a more Pythonic way.
for i, pair in enumerate(the_pairs):
# Instead of having extra counters to work out the row and column,
# we can simply do math on the index value.
column, row = i % 6, i // 6
temp = StringVar()
temp.set(str(pair))
# Instead of adding the button to a list and then reaching into the
# list to configure it, get everything set up first.
button = Button(self,
textvariable = temp,
width = "7",
height = "2",
relief = GROOVE,
command = lambda: print(index)
))
button.grid(row = row, column = column, padx = 1, pady = 1)
buttons.append(button)
pair.button = temp
# total tries
self.label = Label(self) # Don't abbreviate!
Label(self,
text = "Total tries: 0",
font = ("Helvetica", 11, "italic")
).grid(row = 7, columnspan = 7, pady = 5)
# ...
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